Electric temperature-controlling device



{No Model.)

H. E. JACOBS.

ELEGTEIG TEMPERATURE GONTEOLLING DEVICE.

N0.. 363,644. Patented May 24, 1887 ImlA\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ N PETKRS, Phummlmgmphcr. washmglm D. C.

UNITED STATES PATENT OFFICE..

HENRY lE. JACOBS, OFV FOND DU LAC, VISOONSIN.

ELECTRIC TEM PERATURE-CONTROLLING DEVICE.

SPECIFICATION forming part of Letters Patent No. 363,644, dated Mayzl, 1887.

Application tiled September 7. i986. Serial No. 212,933.

To all whom it may concern:

Be it known that I, HENRY E. Jrioons, a citizen of the United States, residing at Fond du Lac, in the county of Fond du Lac and State of NVisecnsin, have invented certain new and useful Improvements in Electric rTemperature- Controlling Devices; and I hereby declare the following to bea full, clear, and exact description of the same.

My present invention relates to an improvement upon devices of the nature of that for which I filed an application for Letters Patent of the United States, Serial No. 209,057, on the 26th day of July, 1886, it being my present object to provide simple and effective means for locking the valve device which controls the inlet and exhaust passages for the compressed air, serving to actuate the flexible receiver or diaphragm to open and close the main valve controlling the passage through which the temperatureaft'eeting medium (hot or cold air, hot water, or steam) enters the apartment to be heated or cooled, the purpose of locking the valve device being to hold it in desired position with reference to the passage :it controls after the circuit shall have been automatically opened by the lowering or raising of the temperature of the apartment.

My invention consists in the general con-v struction of my improvement, and it also consists in certain details of construction and combinations of parts, all as hereinafter more fully set forth.

In the drawings, Figure l represents my device in elevation with the cover of the box re. moved to display its contents, and Figs. 2 and 3 are broken and partly sectional views of dei tails.

Als a box, perfectly airtight when the cover is on, preferably of insulating material, and provided with a tube, C, forming the inletpassage for compressed air supplied from an exterior source, (not shown,) with which the tube C is suitably connected, and with an exhaust-tube, B, which tubes B and C extend toward each other into the box, and are on the sameplane, a space being left between them for the valve device, hereinafter described.

D is the iiexible receiver, communicating from one end with the box A at an opening, fr, therein, and connected at its opposite closed end with the main valve E by means of the (No model l rod 7, having pivoted to its extremity a lever, 9, fulcrumed toward its center to an arm, o, extending from the shell of the valve E, and connected at its opposite end to the valve-stem, whereby the expansion of the receiver D closes the valve E, to prevent the passage. through it into the apartment the temperature of which is'to be affected of theproper agent for the purpose, and the collapse of the receiver opens the valve to permit the passage through it of such agent.

F and F are electromagnets suspended from one end within the box A, being preferably of the kind having their cores extended from their upper ends, or ends at which they are secured in position, adjacent to the exposed poles n n', as shown, to afford the poles m m', and thereby increase the attractive force of the magnets.

An armature, G, is provided for the magnet F,and extends across the polen m fromashoe, I, pivotally supported to hang and oscillate between metal standards I', one of which only is shown, (and that in dotted lines to avoid obstructing other parta) owing to the nature of the view selected to illustrate the device, and the shoe I carries at its lower end, to oscillate between t-he adjacent ends of the tubes B and C, the valve device K, comprising a short solid cylinder, Z, having at opposite ends, preferably, rubber valves k and s, dovetailed into the ends of the cylinder Z to enter the nozzles of the respectively adjacent tubes B and C and alternately close the exhaust and inlet passages. Extending from the upper end of the shoe I is a metal rod, Il, having a head, I, to make alternate contact, owing to the attraction by and release from the electro magnets of the armatures, with the contact-points N and N connected, respectively, with the electromagnets by conductors x and w'.

H is the armature for the magnet F, provided with an extension or finger, II', at which the armature is pivotally supported in position, and which extends into contact with the adjacent side of the shoe I, slightly curved in an upwardand backward direction, as shown.

Both armatures have a tendency to be maintained normally out ofr contact with their respective electro-magnets, produced by spiral IOC springs h h, secured at one end to the same,

to one side of the pivotal support of each, as shown, and at the opposite end to the box. Vithout the box A is a battery, L, having connected with one of its poles a thermostat, M, as shown, or other suitable temperaturemeasuringinstrument, which extends between contact-points g and g", respectively connected by conductors f andf through binding-posts f2 with the electro-magnets F and F. The opposite pole of thc battery L is connected, through a binding post, c, with the metal standard I by a conductor, e; or, if the box is of metal, the conductor c' may be connected directly to the box.

rIhe general purpose of the device being automatically to open and close the valve E, andY thus permit or prevent the passage into an apartment of a suitable temperature-affecting medium by admitting to or exhausting from the collapsible receiver D the power which actuates it to control the valve E, and the particular pu'rpose of the locking detail of the device being to hold the valve mechanism which controls the inlet and exhaust passages tightly against the passage C when moved into contact with the same, and without requiring the electro-motive torce of the battery to be constantly exercised for the purpose, which would rapidly exhaust the battery, the manner of operation will be understood from the following: The normal condition of the battery-circuits is open, being closed by the contact ofthe end of the thermostat*bent to make h to act on the armature G such contact by the effect of the temperature within the apartment containing it, and the temperature of which it is desired to regulate-with acontaet-point, g, or g-if the iirst, g, the current passes from the battery by way of the thermostat through the magnet F, and then by way ofthe contact-point N, rod Il, and standard I', over the conductor c', back to the battery. As shown in Fig. l of the drawings, the device is represented by the full lines as having excited the electro-magnet F by contact of the thermostat with the contact-point g, whereby the armature G was attracted from its position shown in dotted lines against the resistance of the spring 71, being held there by the extension H' of the armature H, wedged against the curved surface of the pivoted shoe (as shown by the full lines) by the downward strain of the spring 7i', to maintain the armature G in Contact with the adjacent magnet F, or rather the valve device K in position to close the passage C and open the passage B, after breaking of the circuit containing such magnet. When the effect of the temperature produced by the operation thus described (which has opened the exhaust-passage B and closed the inlet-passage C) shall have caused the thermostat to close the circuit, including the magnet F', the armature H will be attracted against the resistance of the spring 7L' to its position shown bythe dotted lines, thereby releasing the shoe I from contact with the end of the extension H', and permitting the spring to move the valve device K into position to open the inletpassage C and close the exhaust-passage B. This breaking of a circuit occurs in1mediately after, and as a consequence of the attraction by a magnet of its armature, since the armature G and rod I2, with its head l, are substantially in the form ot a bell-crank lever, pivoted near the angle, whereby the attraction of the armature for closing the inlet-passage C throws the head I against the contactpoint N', where it is in position to form part of the circuit closed by contact ot the thermostat with the coutaet-point g', when the change of temperature to the predetermined degree shall produce such action on the part of the thermostat, and, in like manner, when the armature H is attracted as a consequence ofsuch contact of the thermostat with the point g', the wedging effect ofthe extension H' upon the shoe I is removed, permitting the spring L to act and pull down the armature G,which moves the head I on the rod I'l against the contact-point N, or into position to continue the circuit when closed to open the passage Band stop the passage C by contact of the thermostat with the point g, produced automatically by a predetermined degree of temperature.

It will thus be seen that whenever the armature G is attracted by the magnet F to produce stoppage of the inlet passage C, the circuit is immediately broken; but the valve K is held or locked in its position to maintain closed the inlet-passage C by the extension H', raised to wedge itself against the shoe I by the downward pulling effect of the spring h upon the armaturc'H, and that as soon as the armature II is attracted by the magnet F it releases the shoe I from the wedging effect of the eX tension H' by lowering the latter, thereby permitting the spring h to act by pulling downward the armature G, removing the valve device from the passage C and against the passage B, which is thus closed and held so by the spring h until the armature G is again attracted. In the one case, as it will be seen, the extension H locks the valve device K against the tube C; in the other the spring h holds it against the tube B. Vhile the springs 7L and It' form the preferred medium for their purpose, it is obvious that any other meansmay be employed that will produce the desired effeet upon the armature to act in th-e manner described when unintluenced by attraction of the magnets and released by the breaking of the circuits.

Vhat Iclaimas new, and desire to secure by Letters Patent, is-

In an electric temperature-controlling de vice operating` automatically bythe opening and closing of the circuit through the medium of a heat-measuring'instrument to open and close the inlet and exhaust passages for the power which actuates 'the valve E, the combination, with the electromagnet F', cf a valve device, K, au armature, H, maintained normally out of contact with its electro1nagnet, and a nger, H', controlled by the armature IOO and closing of the circuit through the medium of a heat-measuring instrument to open and close the inlet and exhaust passages for the' power which actuates a valve, E, the combination, with the electro-magnets F and F', of a pivoted armature, G, maintained normally away from its electromagnet, a valve device,-K, connected with and controlled by the armature G, and extending between the vsaid inlet and exhaust passages, and a pivoted armature, H, maintained normally away from its electro-magnet and extending toward the armature G to engage with the same, substantially as and for the purpose set forth.

3'. In an electric temperaturecont-rolling device operating automatically'by the opening and closing of the circuit through the medium of a heat-measuring instrument to openand close the inlet and exhaust passages for the power which actuates a valve, E, the conibination, with the electro-magnets F and F', of a pivoted shoe, I, carrying the armature G, maintained normally away from its electromagnet, and a valve device, K, extending between the said inlet and exhaustpassages, and a pvoted armature, H, maintained normally away from its electro-magnet, and provided with an extension, H', to engage with the shoe I, substantially as and for the purpose set forth.

4. In an electric temperaturecontrolling device operating automatically by the opening and closing of the circuit through the medium of a heat-measuring instrument to open and close the inlet and exhaust passages for the power which actuates a valve, E, the combination, with the electro-magnets F and F', of a pivotcd shoe, I, curved on one surface and carrying an armature, G, held normally away from its electro-magnet by a spring, h,

and a valve device, K, extending between the said inlet and exhaust passages, and a pivotcd armature, H, held normally away from its electro-magnet by a spring, h', and provided with an extension, H', to engage with the curved surface of the shoe, substantially as and for the purpose set forth.

5. In an electric temperature-controlling device operating'automatically by the opening and closing of the circuit through the medium of a heat-measuring instrument to open and close the inlet and exhaust passages for the power which actuates a valve, E, the combination of electro-magnets F and F', contactpointsN and N', a pivoted armature, G, maintained normally away from its electro-magnet, and having connected with it a contact making and breaking device, I2 I3, to oscillate between the contact-points N and N', and a valve device,

K, extending between the said inlet and exi haust passages and controlled by the armature G, and a pivoted arma-ture, H, maintained normally away from its electro-magnet and extending toward the armature G, to engage with the same, substantially as and for the purpose set forth. p

G. In an electric temperaturecontrolling device operating automatically by the opening and closing of the circuit through the medium of a heat-measuring instrument to open and close the inlet and exhaust passages for the power which actuates a yalVe, E, the combination of the electro-magnets F and F', contactpoints N and N', a pivotal shoe, I, curved on one surface and carrying an armature, G, held normally away from its electro-magnet by a spring, h, a contact making and breaking device, 2 I, to oscillate between the contactpoints N and N',and a valve device, K, extending between the said inlet and exhaust passages', and a pivoted armature, H, held normally away from its electro-magnet by a spring, h', and provided with an. extension, H', to engage with the curved surface of the shoe, substantially as and for the purpose set forth.

7. The combination of a box, A, having an opening, r, and containing electro-magnets F and F', tubes B and C, `contact-points N and N',connectcd with the electro magnets, standards I', supporting a pivotalshoe, I, carrying an armature, G, connected with the box by a spring, 7L, a valve device, K, extending between the tubes B and G, and acontact making and breaking device, I" I3, to oscillate between thecontact-points N N', and a pivoted armature, H, connected with the box by a spring, h', and provided with an extension, H', and a battery, L, having a thermostat, M, connected with one pole and extending between contactpoints g and g', connected with the electromagnets,andhavingits oppositepole connected with a standard, I',the whole being constructed and arranged to operate substantially as described.

HENRY E. JACOBS.

In presence of- HENRY HUDSON, J. NV. Dif'nnNEoR'rI-r.

IOO 

